2017-06-28 03:28:48 -05:00
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# Copyright (c) 2015-2017, Jan Cholasta <jcholast@redhat.com>
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#
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# Permission to use, copy, modify, and/or distribute this software for any
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# purpose with or without fee is hereby granted, provided that the above
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# copyright notice and this permission notice appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
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# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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import collections
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import datetime
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import itertools
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import os
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import os.path
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import six
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2020-07-23 07:04:49 -05:00
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from cryptography import __version__ as cryptography_version
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2017-06-28 03:28:48 -05:00
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from cryptography import x509
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from cryptography.hazmat.backends import default_backend
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from cryptography.hazmat.primitives import hashes, serialization
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from cryptography.hazmat.primitives.asymmetric import rsa
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from cryptography.x509.oid import NameOID
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2020-07-23 07:04:49 -05:00
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from pkg_resources import parse_version
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2017-06-28 03:28:48 -05:00
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from pyasn1.type import univ, char, namedtype, tag
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from pyasn1.codec.der import encoder as der_encoder
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from pyasn1.codec.native import decoder as native_decoder
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if six.PY3:
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unicode = str
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DAY = datetime.timedelta(days=1)
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YEAR = 365 * DAY
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# we get the variables from ca_less test
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domain = None
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realm = None
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server1 = None
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server2 = None
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client = None
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password = None
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cert_dir = None
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CertInfo = collections.namedtuple('CertInfo', 'nick key cert counter')
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class PrincipalName(univ.Sequence):
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'''See RFC 4120 for details'''
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componentType = namedtype.NamedTypes(
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namedtype.NamedType(
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'name-type',
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univ.Integer().subtype(
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explicitTag=tag.Tag(
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tag.tagClassContext,
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tag.tagFormatSimple,
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0,
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),
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),
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),
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namedtype.NamedType(
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'name-string',
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univ.SequenceOf(char.GeneralString()).subtype(
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explicitTag=tag.Tag(
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tag.tagClassContext,
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tag.tagFormatSimple,
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1,
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),
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),
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),
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)
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class KRB5PrincipalName(univ.Sequence):
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'''See RFC 4556 for details'''
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componentType = namedtype.NamedTypes(
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namedtype.NamedType(
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'realm',
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char.GeneralString().subtype(
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explicitTag=tag.Tag(
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tag.tagClassContext,
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tag.tagFormatSimple,
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0,
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),
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),
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),
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namedtype.NamedType(
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'principalName',
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PrincipalName().subtype(
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explicitTag=tag.Tag(
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tag.tagClassContext,
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tag.tagFormatSimple,
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1,
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),
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),
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),
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)
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def profile_ca(builder, ca_nick, ca):
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now = datetime.datetime.now(tz=datetime.UTC)
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builder = builder.not_valid_before(now)
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builder = builder.not_valid_after(now + 10 * YEAR)
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crl_uri = u'file://{}.crl'.format(os.path.join(cert_dir, ca_nick))
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builder = builder.add_extension(
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x509.KeyUsage(
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digital_signature=True,
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content_commitment=True,
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key_encipherment=False,
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data_encipherment=False,
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key_agreement=False,
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key_cert_sign=True,
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crl_sign=True,
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encipher_only=False,
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decipher_only=False,
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),
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critical=True,
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)
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builder = builder.add_extension(
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x509.BasicConstraints(ca=True, path_length=None),
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critical=True,
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)
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builder = builder.add_extension(
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x509.CRLDistributionPoints([
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x509.DistributionPoint(
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full_name=[x509.UniformResourceIdentifier(crl_uri)],
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relative_name=None,
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crl_issuer=None,
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reasons=None,
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),
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]),
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critical=False,
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)
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public_key = builder._public_key
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builder = builder.add_extension(
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x509.SubjectKeyIdentifier.from_public_key(public_key),
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critical=False,
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)
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# here we get "ca" only for "ca1/subca" CA
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if not ca:
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builder = builder.add_extension(
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x509.AuthorityKeyIdentifier.from_issuer_public_key(public_key),
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critical=False,
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)
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else:
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ski_ext = ca.cert.extensions.get_extension_for_class(
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x509.SubjectKeyIdentifier
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)
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auth_keyidentifier = (x509.AuthorityKeyIdentifier
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.from_issuer_subject_key_identifier)
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'''
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cryptography < 2.7 accepts only Extension object.
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Remove this workaround when all supported platforms update
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python-cryptography.
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'''
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if (parse_version(cryptography_version) >= parse_version('2.7')):
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extension = auth_keyidentifier(ski_ext.value)
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else:
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extension = auth_keyidentifier(ski_ext)
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builder = builder.add_extension(extension, critical=False)
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return builder
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def profile_server(builder, ca_nick, ca,
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warp=datetime.timedelta(days=0), dns_name=None,
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badusage=False, wildcard=False):
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now = datetime.datetime.now(tz=datetime.UTC) + warp
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builder = builder.not_valid_before(now)
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builder = builder.not_valid_after(now + YEAR)
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crl_uri = u'file://{}.crl'.format(os.path.join(cert_dir, ca_nick))
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builder = builder.add_extension(
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x509.CRLDistributionPoints([
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x509.DistributionPoint(
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full_name=[x509.UniformResourceIdentifier(crl_uri)],
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relative_name=None,
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crl_issuer=None,
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reasons=None,
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),
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]),
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critical=False,
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)
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if dns_name is not None:
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builder = builder.add_extension(
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x509.SubjectAlternativeName([x509.DNSName(dns_name)]),
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critical=False,
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)
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if badusage:
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builder = builder.add_extension(
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x509.KeyUsage(
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digital_signature=False,
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content_commitment=False,
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key_encipherment=False,
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data_encipherment=True,
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key_agreement=True,
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key_cert_sign=False,
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crl_sign=False,
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encipher_only=False,
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decipher_only=False
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),
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critical=False
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)
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2017-07-28 01:54:54 -05:00
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if wildcard:
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names = [x509.DNSName(u'*.' + domain)]
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server_split = server1.split('.', 1)
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if len(server_split) == 2 and domain != server_split[1]:
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names.append(x509.DNSName(u'*.' + server_split[1]))
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builder = builder.add_extension(
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x509.SubjectAlternativeName(names),
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critical=False,
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)
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2017-06-28 03:28:48 -05:00
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return builder
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def profile_kdc(builder, ca_nick, ca,
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warp=datetime.timedelta(days=0), dns_name=None,
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badusage=False):
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now = datetime.datetime.now(tz=datetime.UTC) + warp
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builder = builder.not_valid_before(now)
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builder = builder.not_valid_after(now + YEAR)
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crl_uri = u'file://{}.crl'.format(os.path.join(cert_dir, ca_nick))
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builder = builder.add_extension(
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x509.ExtendedKeyUsage([x509.ObjectIdentifier('1.3.6.1.5.2.3.5')]),
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critical=False,
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)
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name = {
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'realm': realm,
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'principalName': {
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'name-type': 2,
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'name-string': ['krbtgt', realm],
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},
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}
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name = native_decoder.decode(name, asn1Spec=KRB5PrincipalName())
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name = der_encoder.encode(name)
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names = [x509.OtherName(x509.ObjectIdentifier('1.3.6.1.5.2.2'), name)]
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if dns_name is not None:
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names += [x509.DNSName(dns_name)]
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builder = builder.add_extension(
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x509.SubjectAlternativeName(names),
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critical=False,
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)
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builder = builder.add_extension(
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x509.CRLDistributionPoints([
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x509.DistributionPoint(
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full_name=[x509.UniformResourceIdentifier(crl_uri)],
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relative_name=None,
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crl_issuer=None,
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reasons=None,
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),
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]),
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critical=False,
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)
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if badusage:
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builder = builder.add_extension(
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x509.KeyUsage(
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digital_signature=False,
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content_commitment=False,
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key_encipherment=False,
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data_encipherment=True,
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key_agreement=True,
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key_cert_sign=False,
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crl_sign=False,
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encipher_only=False,
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decipher_only=False
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),
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critical=False
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)
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return builder
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def gen_cert(profile, nick_base, subject, ca=None, **kwargs):
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key = rsa.generate_private_key(
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public_exponent=65537,
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key_size=2048,
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backend=default_backend(),
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)
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public_key = key.public_key()
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counter = itertools.count(1)
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if ca is not None:
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ca_nick, ca_key, ca_cert, ca_counter = ca
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nick = os.path.join(ca_nick, nick_base)
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issuer = ca_cert.subject
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else:
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nick = ca_nick = nick_base
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ca_key = key
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ca_counter = counter
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issuer = subject
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serial = next(ca_counter)
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builder = x509.CertificateBuilder()
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builder = builder.serial_number(serial)
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builder = builder.issuer_name(issuer)
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builder = builder.subject_name(subject)
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builder = builder.public_key(public_key)
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builder = profile(builder, ca_nick, ca, **kwargs)
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cert = builder.sign(
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private_key=ca_key,
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algorithm=hashes.SHA256(),
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backend=default_backend(),
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)
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key_pem = key.private_bytes(
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serialization.Encoding.PEM,
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serialization.PrivateFormat.PKCS8,
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serialization.BestAvailableEncryption(password.encode()),
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)
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cert_pem = cert.public_bytes(serialization.Encoding.PEM)
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try:
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os.makedirs(os.path.dirname(os.path.join(cert_dir, nick)))
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except OSError:
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pass
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with open(os.path.join(cert_dir, nick + '.key'), 'wb') as f:
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f.write(key_pem)
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with open(os.path.join(cert_dir, nick + '.crt'), 'wb') as f:
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f.write(cert_pem)
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return CertInfo(nick, key, cert, counter)
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def revoke_cert(ca, serial):
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now = datetime.datetime.now(tz=datetime.UTC)
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crl_builder = x509.CertificateRevocationListBuilder()
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crl_builder = crl_builder.issuer_name(ca.cert.subject)
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crl_builder = crl_builder.last_update(now)
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crl_builder = crl_builder.next_update(now + DAY)
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crl_filename = os.path.join(cert_dir, ca.nick + '.crl')
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try:
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f = open(crl_filename, 'rb')
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except IOError:
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pass
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else:
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with f:
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crl_pem = f.read()
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crl = x509.load_pem_x509_crl(crl_pem, default_backend())
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for revoked_cert in crl:
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crl_builder = crl_builder.add_revoked_certificate(revoked_cert)
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builder = x509.RevokedCertificateBuilder()
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builder = builder.serial_number(serial)
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builder = builder.revocation_date(now)
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revoked_cert = builder.build(default_backend())
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crl_builder = crl_builder.add_revoked_certificate(revoked_cert)
|
|
|
|
|
|
|
|
crl = crl_builder.sign(
|
|
|
|
private_key=ca.key,
|
|
|
|
algorithm=hashes.SHA256(),
|
|
|
|
backend=default_backend(),
|
|
|
|
)
|
|
|
|
|
|
|
|
crl_pem = crl.public_bytes(serialization.Encoding.PEM)
|
|
|
|
|
|
|
|
with open(crl_filename, 'wb') as f:
|
|
|
|
f.write(crl_pem)
|
|
|
|
|
|
|
|
|
|
|
|
def gen_server_certs(nick_base, hostname, org, ca=None):
|
|
|
|
gen_cert(profile_server, nick_base,
|
|
|
|
x509.Name([
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATION_NAME, org),
|
|
|
|
x509.NameAttribute(NameOID.COMMON_NAME, hostname)
|
|
|
|
]),
|
2018-01-09 06:43:09 -06:00
|
|
|
ca, dns_name=hostname
|
2017-06-28 03:28:48 -05:00
|
|
|
)
|
|
|
|
gen_cert(profile_server, nick_base + u'-badname',
|
|
|
|
x509.Name([
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATION_NAME, org),
|
|
|
|
x509.NameAttribute(NameOID.COMMON_NAME, u'not-' + hostname)
|
|
|
|
]),
|
2018-01-09 06:43:09 -06:00
|
|
|
ca, dns_name=u'not-' + hostname
|
2017-06-28 03:28:48 -05:00
|
|
|
)
|
|
|
|
gen_cert(profile_server, nick_base + u'-altname',
|
|
|
|
x509.Name([
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATION_NAME, org),
|
|
|
|
x509.NameAttribute(NameOID.COMMON_NAME, u'alt-' + hostname)
|
|
|
|
]),
|
|
|
|
ca, dns_name=hostname
|
|
|
|
)
|
|
|
|
gen_cert(profile_server, nick_base + u'-expired',
|
|
|
|
x509.Name([
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATION_NAME, org),
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATIONAL_UNIT_NAME,
|
|
|
|
u'Expired'),
|
|
|
|
x509.NameAttribute(NameOID.COMMON_NAME, hostname)
|
|
|
|
]),
|
2018-01-09 06:43:09 -06:00
|
|
|
ca, dns_name=hostname, warp=-2 * YEAR
|
2017-06-28 03:28:48 -05:00
|
|
|
)
|
2019-12-17 21:57:43 -06:00
|
|
|
gen_cert(
|
|
|
|
profile_server, nick_base + u'-not-yet-valid',
|
|
|
|
x509.Name([
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATION_NAME, org),
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATIONAL_UNIT_NAME, u'Future'),
|
|
|
|
x509.NameAttribute(NameOID.COMMON_NAME, hostname),
|
|
|
|
]),
|
|
|
|
ca, dns_name=hostname, warp=1 * DAY,
|
|
|
|
)
|
2017-06-28 03:28:48 -05:00
|
|
|
gen_cert(profile_server, nick_base + u'-badusage',
|
|
|
|
x509.Name([
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATION_NAME, org),
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATIONAL_UNIT_NAME,
|
|
|
|
u'Bad Usage'),
|
|
|
|
x509.NameAttribute(NameOID.COMMON_NAME, hostname)
|
|
|
|
]),
|
2018-01-09 06:43:09 -06:00
|
|
|
ca, dns_name=hostname, badusage=True
|
2017-06-28 03:28:48 -05:00
|
|
|
)
|
|
|
|
revoked = gen_cert(profile_server, nick_base + u'-revoked',
|
|
|
|
x509.Name([
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATION_NAME, org),
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATIONAL_UNIT_NAME,
|
|
|
|
u'Revoked'),
|
|
|
|
x509.NameAttribute(NameOID.COMMON_NAME, hostname)
|
|
|
|
]),
|
2018-01-09 06:43:09 -06:00
|
|
|
ca, dns_name=hostname
|
2017-06-28 03:28:48 -05:00
|
|
|
)
|
|
|
|
revoke_cert(ca, revoked.cert.serial_number)
|
|
|
|
|
|
|
|
|
|
|
|
def gen_kdc_certs(nick_base, hostname, org, ca=None):
|
|
|
|
gen_cert(profile_kdc, nick_base + u'-kdc',
|
|
|
|
x509.Name([
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATION_NAME, org),
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATIONAL_UNIT_NAME, u'KDC'),
|
|
|
|
x509.NameAttribute(NameOID.COMMON_NAME, hostname)
|
|
|
|
]),
|
|
|
|
ca
|
|
|
|
)
|
|
|
|
gen_cert(profile_kdc, nick_base + u'-kdc-badname',
|
|
|
|
x509.Name([
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATION_NAME, org),
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATIONAL_UNIT_NAME, u'KDC'),
|
|
|
|
x509.NameAttribute(NameOID.COMMON_NAME, u'not-' + hostname)
|
|
|
|
]),
|
|
|
|
ca
|
|
|
|
)
|
|
|
|
gen_cert(profile_kdc, nick_base + u'-kdc-altname',
|
|
|
|
x509.Name([
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATION_NAME, org),
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATIONAL_UNIT_NAME, u'KDC'),
|
|
|
|
x509.NameAttribute(NameOID.COMMON_NAME, u'alt-' + hostname)
|
|
|
|
]),
|
|
|
|
ca, dns_name=hostname
|
|
|
|
)
|
|
|
|
gen_cert(profile_kdc, nick_base + u'-kdc-expired',
|
|
|
|
x509.Name([
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATION_NAME, org),
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATIONAL_UNIT_NAME,
|
|
|
|
u'Expired KDC'),
|
|
|
|
x509.NameAttribute(NameOID.COMMON_NAME, hostname)
|
|
|
|
]),
|
|
|
|
ca, warp=-2 * YEAR
|
|
|
|
)
|
|
|
|
gen_cert(profile_kdc, nick_base + u'-kdc-badusage',
|
|
|
|
x509.Name([
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATION_NAME, org),
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATIONAL_UNIT_NAME,
|
|
|
|
u'Bad Usage KDC'),
|
|
|
|
x509.NameAttribute(NameOID.COMMON_NAME, hostname)
|
|
|
|
]),
|
|
|
|
ca, badusage=True
|
|
|
|
)
|
|
|
|
revoked = gen_cert(profile_kdc, nick_base + u'-kdc-revoked',
|
|
|
|
x509.Name([
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATION_NAME, org),
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATIONAL_UNIT_NAME,
|
|
|
|
u'Revoked KDC'),
|
|
|
|
x509.NameAttribute(NameOID.COMMON_NAME, hostname)
|
|
|
|
]),
|
|
|
|
ca
|
|
|
|
)
|
|
|
|
revoke_cert(ca, revoked.cert.serial_number)
|
|
|
|
|
|
|
|
|
|
|
|
def gen_subtree(nick_base, org, ca=None):
|
|
|
|
subca = gen_cert(profile_ca, nick_base,
|
|
|
|
x509.Name([
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATION_NAME, org),
|
|
|
|
x509.NameAttribute(NameOID.COMMON_NAME, u'CA')
|
|
|
|
]),
|
|
|
|
ca
|
|
|
|
)
|
|
|
|
gen_cert(profile_server, u'wildcard',
|
|
|
|
x509.Name([
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATION_NAME, org),
|
|
|
|
x509.NameAttribute(NameOID.COMMON_NAME, u'*.' + domain)
|
|
|
|
]),
|
2017-07-28 01:54:54 -05:00
|
|
|
subca, wildcard=True
|
2017-06-28 03:28:48 -05:00
|
|
|
)
|
|
|
|
gen_server_certs(u'server', server1, org, subca)
|
|
|
|
gen_server_certs(u'replica', server2, org, subca)
|
|
|
|
gen_server_certs(u'client', client, org, subca)
|
|
|
|
gen_cert(profile_kdc, u'kdcwildcard',
|
|
|
|
x509.Name([
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATION_NAME, org),
|
|
|
|
x509.NameAttribute(NameOID.COMMON_NAME, u'*.' + domain)
|
|
|
|
]),
|
|
|
|
subca
|
|
|
|
)
|
|
|
|
gen_kdc_certs(u'server', server1, org, subca)
|
|
|
|
gen_kdc_certs(u'replica', server2, org, subca)
|
|
|
|
gen_kdc_certs(u'client', client, org, subca)
|
|
|
|
return subca
|
|
|
|
|
|
|
|
|
|
|
|
def create_pki():
|
|
|
|
|
|
|
|
gen_cert(profile_server, u'server-selfsign',
|
|
|
|
x509.Name([
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATION_NAME, u'Self-signed'),
|
|
|
|
x509.NameAttribute(NameOID.COMMON_NAME, server1)
|
|
|
|
])
|
|
|
|
)
|
|
|
|
gen_cert(profile_server, u'replica-selfsign',
|
|
|
|
x509.Name([
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATION_NAME, u'Self-signed'),
|
|
|
|
x509.NameAttribute(NameOID.COMMON_NAME, server2)
|
|
|
|
])
|
|
|
|
)
|
|
|
|
gen_cert(profile_server, u'noca',
|
|
|
|
x509.Name([
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATION_NAME, u'No-CA'),
|
|
|
|
x509.NameAttribute(NameOID.COMMON_NAME, server1)
|
|
|
|
])
|
|
|
|
)
|
|
|
|
gen_cert(profile_kdc, u'server-kdc-selfsign',
|
|
|
|
x509.Name([
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATION_NAME, u'Self-signed'),
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATIONAL_UNIT_NAME, u'KDC'),
|
|
|
|
x509.NameAttribute(NameOID.COMMON_NAME, server1)
|
|
|
|
])
|
|
|
|
)
|
|
|
|
gen_cert(profile_kdc, u'replica-kdc-selfsign',
|
|
|
|
x509.Name([
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATION_NAME, u'Self-signed'),
|
|
|
|
x509.NameAttribute(NameOID.ORGANIZATIONAL_UNIT_NAME, u'KDC'),
|
|
|
|
x509.NameAttribute(NameOID.COMMON_NAME, server2)
|
|
|
|
])
|
|
|
|
)
|
2021-06-09 12:13:55 -05:00
|
|
|
ca1 = gen_subtree(u'ca1', u'Example Organization Espa\xf1a')
|
2017-06-28 03:28:48 -05:00
|
|
|
gen_subtree(u'subca', u'Subsidiary Example Organization', ca1)
|
|
|
|
gen_subtree(u'ca2', u'Other Example Organization')
|
|
|
|
ca3 = gen_subtree(u'ca3', u'Unknown Organization')
|
|
|
|
os.unlink(os.path.join(cert_dir, ca3.nick + '.key'))
|
|
|
|
os.unlink(os.path.join(cert_dir, ca3.nick + '.crt'))
|